A Property’s Value
Each CSS property has different rules about what values it can accept. Some properties only accept one of a list of predefined values. Others accept numbers, integers, relative values, percentages, URLs, or colors. Some can accept more than one type of value. While the acceptable values for each property are listed in the section describing that property (mostly in Chapters 10 and 11), I’ll discuss the basic systems here.
Inherit
You can use the inherit value for any property when you want to explicitly specify that the value for that property be the same as that of the element’s parent.
Predefined Values
Most CSS properties have a few predefined values that can be used. For example, the display property can be set to
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